Find the difference of the numbers. Express your answer in scientific notation. (3.57 times 10 Superscript negative 6 Baseline) minus (2.19 times 10 Superscript negative 17)

1.38 times 10 Superscript negative 7
3.351 times 10 Superscript negative 7
1.38 times 10 Superscript negative 7
3.351 times 10 Superscript negative 6

An apartment has a replacement cost of $950,000 and contents valued at $1,450,000. it has a classification of a and a territory rating of 3. find the annual premium a) $10,185 b) $9,230 c) $3,155 d) $13,830

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

What number line represents the solution set for the inequality -1/2 greater than or equal to 4